I am trying to validate email using regex the problem is it fails to validate the email that doesn't have @ character or have have @ character by the end of the word like if i type abcd that would fail also abcd@ it would fail too. this is the regex i am using and i couldn't find anything that cover those cases the abcd and the abcd@

 let emailRegex = /^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;